Figure 3 illustrates the fluctuation of AST and ALT between the two groups. GEE models were utilized to compare the changes in AST and ALT before and after the operation in the two groups. The change in AST before and after the operation was significantly lower in the severe fibrosis group than in the mild fibrosis group (β = −0.4; p = 0.003) after adjusting for age, sex and cirrhosis. Similarly, the change in ALT before and after the operation was significantly lower in the severe fibrosis group than in the mild fibrosis group (β = −0.6; p = 0.006) after adjusting for age, sex and cirrhosis. This evidence concerns the gene GPT and fibrosis.